Solved BIOS showing invalid info, time resets every time shut down.

[Nightdash]

I just replaced my laptop motheboard. With the new motherboard, time always reset after shutdown, and sometimes the little internet icon in the bottom right corner would be invisible. So i upgraded my bios, and still have same problem. I have a LENOVO G470 with InsydeH2O BIOS. I have an image of the bios attached. Also, the bios can read the HDD.

 

[Ztruker]

Did you install a CMOS battery? Is it new or used?
Check the Time zone, make sure it's correct.

 

[Nightdash]

CMOS battery is used. Time zone always changes by itself. It goes to 1/1/09 12:00am

 

[Ztruker]

Since the BIOS is getting scrambled, my first guess would be the CMOS battery. Pain to do but I'd replace it with a new one.

 

[Nightdash]

My apologizes, i opened up my laptop, and I don't have a CMOS battery. I have a bios chipset. It is used and integrated

 

[Ranger4]

Ztrucker's diagnosis is definitely the most likely cause of your problem.

The Lenovo G470 does have a CMOS battery but it does require some dismantling to get to it. If you search on Google under CMOS battery replacement for Lenovo G470 it will give you some idea of the job
If you don't feel able to manage it then get it done professionally.

 

[Nightdash]

Alright so the cmos battery is intergrated..

 

[Nightdash]

Do I have to melt it or something so I can get it off?

 

[Ztruker]

None of the manuals or instructions I found online show how to replace the CMOS battery in the G470. On some of the other Lenovo laptops the battery is in a receptacle much like it is with a Desktop so if you can disassemble it enough you should be able to replace it.

I did find this YouTube video on disassembling a C470. Lenovo G470 laptop take apart/disassemble - YouTube

 

[Nightdash]

Found the CMOS, looks like it is glued on there or something.
that is just a plastic covering the tip of it is glued on the motherboard

 

[Ztruker]

Rats, it's actually soldered in place. That requires a good Computer shop to replace it unless you have good soldering skills, a good soldering iron and a solder sucker.

And there is no guarantee this is the problem. It probably is but the only way to know for sure is to replace it.

How old is the new motherboard? Did you buy it new or used?

 

[Nightdash]

bought it used, 3 years and 8 months old.

 

[Ztruker]

That's old enough for the CMOS battery to be bad.

 

[Nightdash]

Old does for it to be dead?

 

[Ztruker]

??? Don't understand? If you're asking how old it has to be for it to be dead, there is no way to a know.

 

[Nightdash]

??? Don't understand? If you're asking how old it has to be for it to be dead, there is no way to a know.

Thanks for all your help, I got soldering tools with me. I'll work on it later.

 

[Ztruker]

Please let us know how you make out and if that is the problem or not. Thanks